Not just anybody can call himself a private investigator, you need a license. After a lawfully obligated training at a training facility recognised by the minister of Internal Affairs, a license application needs to be submitted. The minister will then set up an investigation by the National Security and the Public Prosecutor. Only if this investigation doesn’t reveal any convictions or incompatible activities, the license will be awarded. The license can be revoked or suspended if the private investigator breaks the law.
The law on private investigating dictates that each private investigator has a duty to identify himself. This means that a private investigator is lawfully obliged to mention his professional title and license number on each document. That way, civilians can easily notice the difference between a lawfully licensed private investigator and one without a license. If a private investigator without a license uses a false license number, he can be prosecuted for forgery of documents.